Module 10

Question 1

Confound

Answer 1

An uncontrolled extraneous variable or flaw in an experiment.

Question 2

Internal Validity

Answer 2

The extent to which the results of an experiment can be attributed to the manipulations of the independent variable rather than to some confounding variable.

Question 3

Multiple-group Time-series Design

Answer 3

A design in which measures are taken on two or more groups both before and after a treatment.

Question 4

Non-equivalent Control Group Posttest Only Design

Answer 4

A design in which at least two non-equivalent groups are given a treatment and then a posttest measure.

Question 5

Non-equivalent Control Group Pretest-posttest design

Answer 5

A design in which at least two non-equivalent groups are given a pretest, then a treatment, and then a posttest measure.

Question 6

Non-manipulated Independent Variable

Answer 6

A design in which participants are assigned to groups based on a preexisting variable rather than being randomly assigned to the groups.

Question 7

Regression to the Mean

Answer 7

A threat to internal validity in which extreme schores, upon retesting, tend to be less extreme, moving toward the mean.

Question 8

Single-group Posttest Only Design

Answer 8

A design in which a single group of participants is given a treatment and then tested.

Question 9

Single-group Pretest-posttest Design

Answer 9

A design in which a single group of participants takes a pretest, then receives some treatment, and then takes a posttest measure.

Question 10

Single-group Time-series Design

Answer 10

A design in which a single group of participants is measured repeatedly before and after a treatment.